The last thing Jesus said was, "Surely, I come quickly." (Rev 22:20) He said, "A little while, and ye shall not see me: and again, a little while, and ye shall see me, because I go to the Father." (John 16:16) He said, "Lo, I am with you always, even unto the end of the world." (Mt 28:20)
When you look for Jesus, you see Him; when you watch for Him, you watch with Him: "I am the light of the world: he that followeth me shall not walk in the darkness, but shall have the light of life." (John 8:12)
We have no choice, we have our orders, we must watch: "And what I say unto you I say unto all, Watch." (Mark 13:37)
Before Jesus took upon Himself the sin of the world, He said to Peter, James and John in the garden of Gethsemane, "My soul is exceeding sorrowful, even unto death: tarry ye here, and watch with me." (Mt 26:38) After they fell asleep, He said to Peter, "What, could ye not watch with me one hour? Watch and pray, that ye enter not into temptation: the spirit indeed is willing, but the flesh is weak." (Mt 26:40-41)
"Behold, I come as a thief. Blessed is he that watcheth, and keepeth his garments, lest he walk naked, and they see his shame." (Rev 16:15)