'Thinking' in the Bible

The Lord saw that the wickedness (depravity) of man was great on the earth, and that every imagination or intent of the thoughts of his heart were only evil continually.

That's why Sarah laughed to herself, thinking, "After I'm so old and my husband is old, too, am I going to have sex?"

Abimelech also asked Abraham, "What could you have been thinking when you did this?"

When the men of the place asked about his wife, he said, “She is my sister,” for he was afraid to say “my wife,” thinking, “The men of the place will kill me on account of Rebekah, for she is a beautiful woman.”

Jacob was thinking, "If Esau comes to one group and attacks it, then the remaining group may escape."

Jacob was thinking, "I'll pacify him with the presents that are being sent ahead of me. Then, when I meet him, perhaps he'll accept me." So the presents went ahead of him, while he spent that night in the camp.

As a result, his brothers became more envious of him. But his father kept thinking about all of this.

After this, Judah told his daughter-in-law Tamar, "Go live as a widow in your father's house until my son Shelah grows up." But he was really thinking, ""otherwise, Shelah might die like his brothers." So Tamar left and lived in her father's house.