John 2:18–25

Jesus came to this world that through His birth, death and resurrection the world could be saved.

We have been offered the greatest gift that we could receive from God in Jesus. The gift of  eternity spent with Him. We only need to accept the gift offered to us!

God does not need us, we need Him to be complete. Jesus died for our sins so that we could stand before our Holy God. He loves us that much!

Godly grief results in repentance, turning from our own way to follow God's way, and repentance leads to salvation. In the original Greek, the word for "salvation," soterion, denoted deliverance from the bondage of one's past sinful behaviors. 

Luke 15:10: "Just so, I tell you, there is joy before the angels of God over one sinner who repents." First5 

John 2:18–25

18 So the Jews answered and said to Him, “What sign do You show to us, since You do these things?” 19 Jesus answered and said to them, “Destroy this temple, and in three days I will raise it up.” 20 Then the Jews said, “It has taken forty-six years to build this temple, and will You raise it up in three days?” 21 But He was speaking of the temple of His body. 22 Therefore, when He had risen from the dead, His disciples remembered that He had said this to them; and they believed the Scripture and the word which Jesus had said. 23 Now when He was in Jerusalem at the Passover, during the feast, many believed in His name when they saw the signs which He did. 24 But Jesus did not commit Himself to them, because He knew all men, 25 and had no need that anyone should testify of man, for He knew what was in man. The New King James Version

As they had with John the Baptist, the religious leaders want Jesus to justify His actions. 

The Greek text uses the word pisteuō here. John uses a wordplay here, describing how “many believed” (pisteuō in Greek) in Jesus in, but Jesus does not trust or believe (pisteuō) them in return. 

Jesus is divinely appointed, so the glory of other people is not His concern—He receives His glory from God the Father.  Faithlife Study Bible

The Jews apparently refers to the religious authorities of Israel, who also understood that Jesus was representing Himself as the Messiah; therefore, they asked for a sign. Jesus was not talking about the physical building; He was referring to His body. Jesus was speaking of His death. I will raise it up, note that Jesus did not say, “I will build it again.” He was referring to His resurrection, three days after His death. 

The sign Jesus gave the Jews was the sign of His death and resurrection. 

The disciples understood that Jesus was the Messiah, but they did not understand that He was speaking of the resurrection of His body until it actually happened. 

These individuals trusted Jesus, but Jesus did not entrust Himself to them. Jesus fully understood the depth of trust of those who were following Him; some would stay, but many would fall away. The NKJV Study Bible

Our Lord knew all men, their nature, dispositions, affections, designs, so as we do not know any man, not even ourselves. He knows his crafty enemies, and all their secret projects; his false friends, and their true characters. He knows who are truly his, knows their uprightness, and knows their weaknesses. We know what is done by men; Christ knows what is in them, he tries the heart. Beware of a dead faith, or a formal profession: carnal, empty professors are not to be trusted, and however men impose on others or themselves, they cannot impose on the heart-searching God. Matthew Henry’s Concise Commentary

Matthew 9:4 But Jesus, knowing their thoughts, said, “Why do you think evil in your hearts?

Matthew 26:61 and said, “This fellow said, ‘I am able to destroy the temple of God and to build it in three days.’ ”

Matthew 27:40 and saying, “You who destroy the temple and build it in three days, save Yourself! If You are the Son of God, come down from the cross.”

Mark 14:58 “We heard Him say, ‘I will destroy this temple made with hands, and within three days I will build another made without hands.’ ”

Mark 15:29 And those who passed by blasphemed Him, wagging their heads and saying, “Aha! You who destroy the temple and build it in three days,