Summary: If we have the faith that Our God is a Faithful God, so we must be faithful to Him. This is some of many reason why our God called "The Faithful God".
WHY WE CALLED HIM, "THE FAITHFUL GOD"?
Deut. 7:9 (New Living Translation)
"Understand, therefore, that the LORD your God is indeed God. HE IS THE FAITHFUL GOD who KEEPS HIS COVENANT for a thousand generations and CONSTANTLY LOVES those who love him and obey his commands."
1 Cor 1:9 (King James Version)
God is faithful, by whom ye were called unto the fellowship of his Son Jesus Christ our Lord.
Something wonderful that the word "faithful" can be describe as "faith-full", or "full of faith". Even in the Greek language, these two words share the same word, which is, pistis. So, we can say, “how big is your faith to God, depends on how faithful you are to Him (and His word).”
There at least 4 magnificent reason why we called Him, “The Faithful God”.
1. He is faithful because He is faithful
2 Tim 2:7-13 KJV
“Consider what I say; and the Lord give thee understanding in all things… It is a faithful saying:
For if we be dead with him, we shall also live with him:
If we suffer, we shall also reign with him:
If we deny him, he also will deny us:
If we believe not, yet he abide faithful:
[because] he cannot deny himself.”
These wonderful verses told us about, what is our duty, and what we will get when we accomplish it. BUT, for the last verse says, “If we believe NOT - if we faithful NOT – YET He abide faithful.” Can you see the different with other passages above? Why when we not faithful to Him, He keeps faithful to us? It is because; the faithfulness is God’s character. He CAN’T DENY HIMSELF!
God is faithful because that is His character, just like He is Holy, or He is Love, or He is Righteousness. You cannot make God not faithful, whatever you have done; it will not make Him less faithful.
2. He is faithful because He never forget His promises
“He hath remembered his covenant for ever, the word which he commanded to a thousand generations… For he remembered his holy promise, and Abraham his servant.”
God is faithful because He keeps His promise. Our Jesus is an unchanging God, and so with His promises. EVERYTHING He said or says, He will fulfill them. If He promises us that He will heal us, and believe, that He will heal us! If He promise that whosoever believe in Him, will be save, and He will! That is why our salvation is sure.
God can’t lie, Tit 1:2, “In hope of eternal life, which God, that cannot lie, promised before the world began;”
3. He is faithful because He prepared a way out for us, whenever troubles around us
1 Cor 10:13, “There hath no temptation taken you but such as is common to man: but God is faithful, who will not suffer you to be tempted above that ye are able; but will with the temptation also make a way to escape, that ye may be able to bear it.”
4. He is faithful because He loves us
Love (mercy) and faithfulness always walk together.
We only can be faithful to someone we loved; and so is God, He is faithful because He loves us, and nothing will and can separate us from His mighty love.
You may run away from many places, you even can runaway from your family, BUT you will never run away from His love.