"And the same John had his raiment of camel's hair, ...Then went out to him Jerusalem, and all Judea, and all the region round about Jordan, and were baptized of him in Jordan, confessing their sins...I indeed baptize you with water unto repentance: but he that cometh after me is mightier than I, whose shoes I am not worthy to bear: He shall baptize you with the Holy Ghost, and with fire...Then cometh Jesus from Galilee to Jordan unto John, to be baptized of him."
Matthew 4: 6-13
"...Now when they heard this, they were pricked in their heart, and said to Peter and to the rest of the apostles, Men and brethren, what shall we do?
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...
Then they that gladly received his word were baptized: And the same day there were added unto them about three thousand souls."
Acts 2:37-38;41
"And why call ye me, Lord, Lord, and do not the things which I say?
Whosoever cometh to me and heareth my sayings, and doeth them, I will show you to whom he is like: He is like a man who built an house, and digged deep, and laid the foundation on a rock: and when the flood arose, the stream beat vehemently upon the house and could not shake it: for it was founded upon a rock. But he that heareth , and doeth not, is like a man that without a foundation built an house upon the earth; against which the stream did beat vehemently, and immediately it fell; and the ruin of that house was great."
Luke6: 46-49
We know we are saved if we do the will of our Father. Not just hearers of His word, but doers of His word.