Summary: Anyone who presents the Gospel is considered to have "beautiful feet" which "brings glad tidings of good things." Some are called to travel long distances, and some are limited. Regardless, the key is to be obedient and willing to carry out Christ's great commission.
No true follower of Jesus Christ can afford in these last days or any time to remain silent as countless souls pour into eternity every day. If we love the LORD as we claim, it is out of love, regardless of the hostility of people and the forces of evil, to do everything possible to share the message of the Gospel with them. We must not be afraid of what anyone says or does to us. We must not be afraid nor intimidated by any government edict, threat, or law in order that would try to stop the commission the Lord Jesus Christ gave us. We are to ignore the tirades of the mental midgets in places of authority who would think that shaking their fists in our faces would prevent the power of God to transform the vilest of lives. The enemies of the Gospel are the servants of the devil, who hate God and everything for which He stands (2 Corinthians 11:12-15). The devil is the prince of this world (Ephesians 2:2), and he will do and say anything to prevent his enslaved subjects from hearing that they can be freed by the grace, mercy, and saving power of Jesus Christ. The devil uses government, persecution, fear, intimidation, shame, and peer pressure to silence the voices of Christians who point out the destructive actions and words bringing this world and its inhabitants to ruination, both here and in terms of eternity. None of what the world, the flesh, and the devil throw at us should EVER be used as an excuse to prevent us from fulfilling an order that our King gave to us before He left for heaven two thousand years ago. The command to present the saving message of the Gospel is to be done not only by preachers, evangelists, and teachers, but everyone who has been redeemed by Him.
The blessing of evangelism is that anyone is capable of doing it. If we are in tune to the leading of the Holy Spirit and the guidance of God's Holy Word and take our mind off the things of the world, our minds and hearts become open and subject to His instructions. Remember that the things of this world are to be destroyed and that we are not to hold on to temporary possessions but to reach out and grasp the heart and mind of those around us who might be taking their final breath this very day. With this in mind, how do we go about in sharing our faith, even if we are limited by age, mobility, education, or other situations? As someone who is limited by illness and cannot travel as much as I would like, I want to share some insights from Scripture and my own experiences to show that God can use you anywhere and, in any situation, to share the Word of the Living God in these days leading to His glorious return and rule as Scripture proclaims. First, nothing can get underway without approaching the LORD in prayer. We don't go out to battle without being equipped with the weapons and intelligence needed to "fight the good fight" and win (Genesis 32:26-28; 1 Kings 17:21-22; Matthew 17:21, 21:22; John 14:13, 15:7; Acts 4:31,16:25-26, 31; Romans 10:9-10, 13; Ephesians 6:10-18; James 5:18). We cannot do the work of the LORD in our strength. I believe this is what prevents a lot of "good intentions" and "proposed ministries" from being enacted. We do not go out into the fields of harvest without knowing how to glean. We need to study the Word, make certain that we are clean before the LORD, and live a life that demonstrates that "our walk matches our talk". We must have a true relationship with the LORD of the work before we can do the work of the LORD.
Your "beautiful feet" can begin their journey with something as simple as leaving Gospel tracts in places that you frequent. I realize that not everybody is eloquent in speech and that talking to someone about anything can be intimidating. Good, biblically sound gospel tracts can present the story of Jesus when your own speech gets wobbly at times. I have used tracts from "Moments with the Book" and Chick Publications (although I am not KJV only as they are) for many years, putting them in public bathrooms, local businesses (with permission), restaurants (with a good tip), and have given them out at public events such as parades, carnivals, concerts, and other areas, saying, "Did you get one of these?", or "Here, take one." If someone asked what they were, I took the time to explain it to them. Many of them were appreciative of what I was doing. Some were indifferent or worse. That does not matter. Your job is to present the life-changing Word of God, and let the Holy Spirit take care of their souls (Luke 9:1-6). I also have my website printed on the back for further information. This leads to the next way the LORD can use your "beautiful feet" when you can't walk very far, and that is the use of the internet. At this moment, more people are using the internet to get answers about life and what lies beyond it. It is an opportunity for anyone regardless of age, education, or any limitations that you think you might have. Your own testimony, posted on social media, can be used by the LORD to change a life. Do not worry if you receive a caustic comment from someone. The opinions of people are not the issue. You are to persevere in the calling that God gave you.