Omnipotence describes the all encompassing power of God.

From the beginning, God displays incomprehensible power with the creation of space and time.

In the beginning God created the heavens and the earth. The earth was formless and void, and darkness was over the surface of the deep, and the Spirit of God was moving over the surface of the waters. Then God said, "Let there be light"; and there was light. (Gen 1:1-3)

At a human level, God's all encompassing power includes authority over everything and the ability to assign dominion to whomever He pleases.

God created man in His own image, in the image of God He created him; male and female He created them. God blessed them; and God said to them, "Be fruitful and multiply, and fill the earth, and subdue it; and rule over the fish of the sea and over the birds of the sky and over every living thing that moves on the earth." (Gen 1:27-28)

I have made the earth, the men and the beasts which are on the face of the earth by My great power and by My outstretched arm, and I will give it to the one who is pleasing in My sight. Now I have given all these lands into the hand of Nebuchadnezzar king of Babylon, My servant, and I have given him also the wild animals of the field to serve him. (Jer 27:5-6)

Yet human beings are powerless to atone and pay for their sins (Ps 49:7-8). Only God has the ability to provide the means to meet the judicial price for and atone for mankind's sins.

For there is one God, and one mediator also between God and men, the man Christ Jesus, who gave Himself as a ransom for all, the testimony given at the proper time. (1 Tim 2:6)

Only God has the power to forgive sin, render judicial judgment of sin and dispense the consequences to those who are guilty of sin.

Then the Lord passed by in front of him and proclaimed, "The Lord, the Lord God, compassionate and gracious, slow to anger, and abounding in lovingkindness and truth; who keeps lovingkindness for thousands, who forgives iniquity, transgression and sin; yet He will by no means leave the guilty unpunished, visiting the iniquity of fathers on the children and on the grandchildren to the third and fourth generations." (Ex 34:6-7)

And only God has the power to provide life after death.

For the wages of sin is death, but the free gift of God is eternal life in Christ Jesus our Lord. (Rom 6:23)

And the testimony is this, that God has given us eternal life, and this life is in His Son (1 John 5:11)

Omnipotence is absolute power not relative, infinite not finite, and perfect beyond comprehesion.