"I will not leave you comfortless: I will come to you." - John 14:18 KJV

Jesus comforted His disciples with the promise that He would not leave them. Though He would die, be buried, on the third day rise again, then forty days later ascend to heaven, Jesus assured His disciples He would come to them.

"Ye have heard how I said unto you, I go away, and come again unto you. If ye loved me, ye would rejoice, because I said, I go unto the Father: for my Father is greater than I. And now I have told you before it come to pass, that, when it is come to pass, ye might believe." - John 14:28-29 KJV

On the Day of Pentecost, Jesus came to His disciples as He said He would. It was His Spirit that came, and as His disciples were filled with His Spirit, they became the Body of Christ. The Father that was in Christ doing the works, would now dwell in His disciples. They would become sons of God. (John 1:11-13, John 3:5, Acts 2:38, John 14:9-11).

"Verily, verily, I say unto you, He that believeth on me, the works that I do shall he do also; and greater works than these shall he do; because I go unto my Father. And whatsoever ye shall ask in my name, that will I do, that the Father may be glorified in the Son. If ye shall ask any thing in my name, I will do it." - John 14:12-14 KJV

"If ye love me, keep my commandments. And I will pray the Father, and he shall give you another Comforter, that he may abide with you for ever; Even the Spirit of truth; whom the world cannot receive, because it seeth him not, neither knoweth him: but ye know him; for he dwelleth with you, and shall be in you. I will not leave you comfortless: I will come to you." - John 14:15-18 KJV

"And when the day of Pentecost was fully come, they were all with one accord in one place. ... And they were all filled with the Holy Ghost, and began to speak with other tongues, as the Spirit gave them utterance." - Acts 2:1, 4 KJV

Next: Part 2 of the Comforter… the Defense Attorney