lo. Figure of speech Asterismos (App-6), for emphasis.
He saw: i.e. the Lord saw.
the Spirit of God. Note the Articles, and see App-101.
God. See App-98.
like = as if. Greek. hosei = sis it were (not homoios = resembling in form or appearance): referring to the descent, not to bodily form as in Mar_1:10. In Luk_3:22hosei may still be connected with the manner of descent, the bodily form referring to the Spirit.