1 Psa 15:1-5. Those who are fit for communion with God may be known by a conformity to His law, which is illustrated in various important particulars.
abide - or, "sojourn" (compare Psa 5:4), where it means under God's protection here, as (Psa 23:6, Psa 27:4, Psa 27:6) communion.
tabernacle - seat of the ark (2Sa 6:17), the symbol of God's presence.
holy hill - (Compare Psa 2:6).

2 walketh - (Compare Psa 1:1).
uprightly - in a complete manner, as to all parts of conduct (Gen 17:1), not as to degree.
worketh - or, "does."
righteousness - what is right.
in his heart - sincerely (Pro 23:7).

3 He neither slanders nor spreads slander.

4 Love and hate are regulated by a regard to God.
sweareth ... hurt - or what so results (compare Lev 5:4).

5 (Compare Lev 25:37; Deu 23:19, Deu 23:20).
usury is derived from a verb meaning "to bite." All gains made by the wrongful loss of others are forbidden.
taketh reward, etc. - The innocent would not otherwise be condemned (compare Exo 23:8; Deu 16:19). Bribery of all sorts is denounced.
doeth these, etc. - Such persons admitted to God's presence and favor shall never be moved (Psa 10:6; Psa 13:5).