Luke 20:44

If David then calls him ‘Lord,’ how can he be his son?” ¹ 

David calls him ‘Lord’. How then can he be his son?"

"Therefore David calls Him ‘Lord,’ and how is He his son?"

Since David called him Lord, how can he be his son at the same time?"

"David here designates the Messiah as 'my Master'--so how can the Messiah also be his 'son'?"

David then gives him the name of Lord, so how is it possible for him to be his son?

David thus calls him Lord; so how can he be his son?"

"Therefore David calls Him ‘Lord’; how is He then his Son?"

If David then calls him ‘Lord,’ how can he be his son?” ¹ 

¹ tn Grk “David thus calls him ‘Lord.’ So how is he his son?” The conditional nuance, implicit in Greek, has been made explicit in the translation (cf. Matt 22:45).