Isaiah prophesied of the rest that Jesus has for those that answer His call.

"For with stammering lips and another tongue will he speak to this people. To whom he said, This is the rest wherewith ye may cause the weary to rest; and this is the refreshing: yet they would not hear." - Isaiah 28:11-12

This rest Isaiah spoke of is the Holy Ghost. We speak in tongues when we receive the Holy Ghost.

"And they were all filled with the Holy Ghost, and began to speak with other tongues, as the Spirit gave them utterance." - Acts 2:4 (See also: Acts 9:6 and Acts 10:44-46)

Jesus told us if we come to Him, take His yoke upon us, and learn of Him, we will find this rest.

"Come unto me, all ye that labour and are heavy laden, and I will give you rest. Take my yoke upon you, and learn of me; for I am meek and lowly in heart: and ye shall find rest unto your souls. For my yoke is easy, and my burden is light." - Matthew 11:28-30

When Jesus calls us and we come to Him, we turn our back on the world. We love Him with all of our heart, soul, and might. (Deut. 6:4-5) We take His yoke when we are baptized in water in His name Jesus. When we are joined to Jesus, full of His Spirit, we find rest for our souls

The Holy Ghost is rest for our souls. Jesus promises His Holy Ghost to us when we repent and are baptized in Jesus name.

"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." - Acts 2:38

"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 2:39