To pray silently in one's mind is spoken of as if he were speaking in his heart. The word "heart" refers to his thoughts and his mind. AT: "praying" or "praying quietly" (See: [[rc://en/ta/man/translate/figs-metaphor]] and [[rc://en/ta/man/translate/figs-metonymy]])
"suddenly [Rebekah](rc://en/tw/dict/bible/names/rebekah) came" or "I was surprised because I saw [Rebekah](rc://en/tw/dict/bible/names/rebekah) coming"