Greek Bible Art: Head of Goliath

The image shows David with the Head of Goliath by Caravaggio (source). This verse is from 1 Samuel 17:46.

ἀποκτενῶ σε καὶ ἀφελῶ τὴν κεφαλήν σου ἀπὸ σοῦ.
Percutiam te, et auferam caput tuum a te.
I will smite thee, and take thing head from thee.