Deuteronomy 10:3-5

3So I made an ark of acacia wood and carved out two stone tablets just like the first ones. Then I went up the mountain with the two tablets in my hands.

4The Lord then wrote on the tablets the same words, the ten commandments, which he had spoken to you at the mountain from the middle of the fire at the time of that assembly, and he gave them to me.

5Then I turned, went down the mountain, and placed the tablets into the ark I had made – they are still there, just as the Lord commanded me.