Acts 2:38 And Peter answered them, Repent (change your views and purpose to accept the will of God in your inner selves instead of rejecting it) and be baptized, every one of you, in the name of Jesus Christ for the forgiveness of {and} release from your sins; and you shall receive the gift of the Holy Spirit.
John 15:5 I am the Vine; you are the branches. Whoever lives in Me and I in him bears much (abundant) fruit. However, apart from Me [cut off from vital union with Me] you can do nothing.
Zech 4:6 Then he said to me, ............ Not by might, nor by power, but by My Spirit says the Lord of hosts.
Man (through the deception of Satan ... as happened with Eve in the Garden of Eden,) think they can do/have it all without God's input. It is called pride!
You can swim, dunk yourself, dive under in a river/waterway, or run your shower all day, but unless you have surrendered to Lord Jesus by inviting Him into yourself, NOTHING will happen .... being "saved" & receiving the Holy Spirit is ALL part of Father's plan for man ..... provided ".... so that whoever believes in (trusts in, clings to, relies on) Him shall not perish (come to destruction, be lost) but have eternal (everlasting) life."
Jesus set the example, He knew the power & love of Father, He obeyed Father & came to earth to do Father's will. At the appointed time (aged 30) He was directed by Father to come to the River Jordan (to John the Baptist -
John 1:6 There came a man sent from God, whose name was John.
John 1:7 This man came to witness, that he might testify of the Light, that all men might believe in it [adhere to it, trust it, and rely upon it] through him.
John 1:8 He was not the Light himself, but came that he might bear witness regarding the Light.
John 1:9 There it was--the true Light [was then] coming into the world [the genuine, perfect, steadfast Light] that illumines every person.) ... Jesus was in the guise of man, recognised as a carpenter, & as He went under the water of the Jordan, through the power of God/His Father, the "old man .. the carpenter" was left behind & when He came up out of the water, Jesus received His Father's Spirit (the Holy Spirit) ... so he was transformed into Christ (Anointed) Jesus ... so that through the power of the Holy Spirit could be done all that Father had planned for Him .... water into wine ... heal the sick ... bring the dead back to life ... bear the horrific treatment & being nailed to the cross (no "normal" man could have survived what happened before He made it to Golgotha .... Father's Spirit ... the power & love of Father was in Him ... enabling Him to complete God's will for ALL who believe.)
Jesus didn't do it by His own strength & neither can ANY man!