Summary: Like Moses, your pastor cannot and is not expected by God to do the work by himself. Like Moses pastors need others who will hold his arms high that they may be steadied and that he may be able to lead as God would have him do.
Hold Him Up
Under the leadership of Moses, God delivered Israel from Egypt and was led into the wilderness in route to the Promised Land. In their journeying, Israel came to Rephidim. There at Rephidim, the Amalekites, nomadic descendants of Esau, began to conduct assaults against Israel. According to Deuteronomy 25 (quickview) , Amalek's tactic was to attack Israel's rear ranks, all those who were too weak to keep pace in the desert with the their fellow Israelites, the stragglers, the ill, the weak, the young, and the wearied. Moses sent Joshua to choose out men and go out and fight Amalek, while he would go up on the hill, overlooking the battle, with his shepherd's staff, the rod of God, in his hand. As long as Moses could hold his hand up with the rod of God, the enemy was not able to prevail against Israel. But when he let down his hand, Amalek prevailed. As long as he lifted the rod with his hand, the enemy had no power over Israel; they could not prevail against them. Not too many us could hold our hands up for long before our arms would become weak and tired. In order to keep his arms held high he needed help. Aaron and Hur got a stone for Moses to sit on, and stood alongside Moses, one on his right, one on his left, holding up his hands. Through their support of Moses, God enabled Israel to prevail over their enemy. By Aaron and Hur doing their part Moses' hands were steady until victory was won.
Here we see a great truth, that can be applied to the church. Like Moses, God has appointed His leadership within the Body of Christ - your pastor. Like Moses, your pastor cannot and is not expected by God to do the work by himself. Like Moses pastors need others who will hold his arms high that they may be steadied and that he may be able to lead as God would have him do. God’s leaders have always depended on and need others to support them in their work.
I Support your pastor by praying for him
A 1 Timothy 2:1-2 (quickview)  "I exhort therefore, that, first of all, supplications, prayers, intercessions, and giving of thanks, be made for all men; For kings, and for all that are in authority..."
C Gardener Spring who lived in the 1800s, wrote about the need to pray for pastors. He penned, "If a people are looking for rich sermons from their minister, their prayers must supply him with the needed material. If they seek for faithful sermons, their prayers must urge him by a full and uncompromising manifestation of the truth to commend himself to every man's conscience in the sight of God. If God's people are going to expect powerful and successful sermons, their prayers must make him a blessing to the souls of men. Would they have him come to them in the fullness of the blessings of the gospel of peace with a pounding heart and a burning eye and a glowing tongue and with sermons bathed in tears and filled with prayer? If so, their prayers must urge him to pray and their tears inspire his thrilling heart with the strong yearnings of Christian affection. It is in their own closets that the people of God most effectively challenge their beloved ministers to take heed to the ministry they have received from the Lord Jesus."