John 14.28-29 cont.
28 You have heard that I told you: “I am going, and I am coming back to you. If you loved Me, you would have rejoiced that I am going to the Father, because the Father is greater than Me.
29 And now I have told before it happens, so then when it should happen you might believe.
Perhaps we have all heard the expression ‘calling wolf’. We know that it has its origins in the story of a boy who kept telling people that a wolf was coming, but there was no wolf. Then one day there was a wolf, and the boy cried out that a wolf was coming, but no one believed him, because every other time he had called ‘wolf’ there was no wolf.
The boys words had built unbelief into his hearers.
Our words do have an impact on other people. They can build faith, or they can build unbelief. When words have a lack of fulfilment, disbelief is bound to follow.
Every word of Jesus was spoken to build up the faith in His hearers.
In verse 29 Jesus plainly told the disciples that the words He had been speaking to them would build up their faith, so that when those things happened they would believe Him.
Jesus never cries ‘wolf’. His words will always be fulfilled. His promises will take place. It is true they may not happen just when we expect them to, or when we would like them to happen, but happen they will, because Jesus is faithful to His word.
This is the second time that Jesus had said this whilst in the Upper room.
He also made a similar statement when He was talking about the End Times:
 “For false messiahs and false prophets will rise up and perform great signs and wonders so as to deceive, if possible, even God’s chosen ones.
 See, I have warned you about this ahead of time” – Matthew 24.24-255 (NLT). Jesus knows all things, and He reveals to us the things that are necessary for us to know, and He does this in order that we might believe Him, and believe in Him being the Lord of every situation.
It is true that we all face situations that come upon us unexpectedly, and we may question why Jesus didn’t forewarn us. The answer must be that He trusts us to be ready and able to deal with whatever the situation may be, and that He has already invested sufficient faith within us to be able to deal with that situation.
The reality is that His grace is sufficient for all our needs.