When Sarah laughed at God for saying he'd make Sarah pregnant, God responded by saying "Is anything too hard for the Lord?"
Is any thing too hard for the LORD? Genesis 18:14
When Moses doubts that God can feed his 600,000 soldiers and their families, God says to him, "Has my hand gotten shorter lately?"
And the LORD said unto Moses, Is the LORD's hand waxed short? Numbers 11:23
Then Job answered the LORD, and said, I know that thou canst do every thing. Job 42:1-2
When God tells Jeremiah that he will soon destroy Jerusalem by the sword, famine, and pestilence, Jeremiah and God say it will be easy for him, since nothing's too hard for the Lord.
Ah Lord God! ... there is nothing too hard for thee. Jeremiah 32:17
Behold, I am the Lord, the God of all flesh: is there any thing too hard for the Lord? Jeremiah 32:27
When the angel Gabriel told Mary that the Holy Ghost would soon impregnate her, she said, "How will that work, since I am a virgin?" But the angel told her, "Nothing's impossible with God."
For with God nothing shall be impossible. Luke 1:37
When Jesus said that it'd be easier for a camel to go through the eye of a needle, than for a rich man to enter God's kingdom, his disciples said, "Then who can be saved?" Jesus replied by saying, everythng's possible with God.
The things which are impossible with men are possible with God. Luke 18:27
After God judged the great whore and just before Jesus got married, a great thundering voice of many waters said:
The Lord God omnipotent reigneth. Revelation 19:6
God is powerless against iron chariots.
And the Lord was with Judah; and he drave out the inhabitants of the mountain; but could not drive out the inhabitants of the valley, because they had chariots of iron. Judges 1:19
Jesus, whom many Christians believe is God, was unable to do any mighty works in his hometown.
Is not this the carpenter, the son of Mary, the brother of James, and Joses, and of Juda, and Simon? and are not his sisters here with us? And they were offended at him. But Jesus, said unto them, A prophet is not without honour, but in his own country, and among his own kin, and in his own house. And he could there do no mighty work, , save that he laid his hands upon a few sick folk, and healed them. Mark 6:4-6
And just like George Washington, God cannot tell a lie.
God ... cannot lie. Titus 1:2
It was impossible for God to lie. Hebrews 6:18