"And ye shall know the truth, and the truth shall make you free." - John 8:32  

"Jesus saith unto him, I am the way, the truth, and the life: no man cometh unto the Father, but by me." - John 14:6  

"They answered him, We be Abraham's seed, and were never in bondage to any man: how sayest thou, Ye shall be made free? Jesus answered them, Verily, verily, I say unto you, Whosoever committeth sin is the servant of sin. And the servant abideth not in the house for ever: but the Son abideth ever. If the Son therefore shall make you free, ye shall be free indeed." - John 8:33-36  

Who is the Son? The Son is our heavenly Father, manifest in the flesh to set us free from sin. His saving name above every name is JESUS.

"If ye had known me, ye should have known my Father also: and from henceforth ye know him, and have seen him." - John 14:7  

"But this shall be the covenant that I will make with the house of Israel; After those days, saith the LORD, I will put my law in their inward parts, and write it in their hearts; and will be their God, and they shall be my people. And they shall teach no more every man his neighbour, and every man his brother, saying, Know the LORD: for they shall all know me, from the least of them unto the greatest of them, saith the LORD: for I will forgive their iniquity, and I will remember their sin no more." - Jeremiah 31:33-34

What us this new covenant? The gospel. 

"Then Peter said unto them, Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost. For the promise is unto you, and to your children, and to all that are afar off, even as many as the Lord our God shall call." - Acts 2:38-39

"But God be thanked, that ye were the servants of sin, but ye have obeyed from the heart that form of doctrine which was delivered you. ... But now being made free from sin, and become servants to God, ye have your fruit unto holiness, and the end everlasting life." - Romans 6:17, 22