Although from the beginning He had the nature of God He did not reckon His equality with God a treasure to be tightly grasped.
In other words, the Word took flesh, which became the human life known as Jesus of Nazareth. This human form did not of itself have GOD’s power over matter which we call “the ability to do miracles.” Jesus’ miracles all came about because GOD the Father gave him that power in the moment.
In the Garden of Gethsemane Jesus realized the utter isolation and agonizing death he was about to endure, and beseeched the Father to be relieved of that burden, yet surrendered: “Not my will, Father, but Yours be done.” When on the cross one of His “seven words” was to speak the opening line of Psalm 22; in that day the effect was to ask all present to recall that Psalm in toto. The first half of Psalm 22 gives a horrific description of being crucified, while the second half leads to peace and completion.
So, while in human form as Jesus, the Word was less than the Father because He lacked the Father’s power. His sacrifice for our sins was for that reason a perfect atonement.