立证是在辩护中引例证明。

To aver is to allege in a pleading.

youdao

他去攻击埃及地的时候，在约瑟中间立此为证。我在那里听见我所不明白的言语。

He established it as a statute for Joseph when he went out against Egypt, where we heard a language we did not understand.

youdao

他去攻击埃及地的时候，在约瑟中间立此为证。我在那里听见我所不明白的言语。

This he ordained in Joseph for a testimony, when he went out through the land of Egypt: where I heard a language that I understood not.

youdao