10:29-37 What does the parable in V30-37 here teach?

This is called the parable of the good Samaritan. It is only recorded by Luke and teaches that our neighbour is any person whose need we know and whose need we are able to meet.

We fulfill the righteousness of God's commandment that we are to love our neighbour as ourselves when we respond to such a person's need, whether they be a brother or sister in the Lord, or our worst enemy (cp Ex 23:4-5; Mt 5:43-48; Lk 6:27-36; Jn 13:34-35; Ro 13:8-10; 15:1-3; Eph 4:25; 1Jn 3:11, 16-18).

God's command to love our neighbour as ourselves extends far beyond our immediate circle of friends and other Christians with whom we fellowship on a regular basis. It is a call to show mercy and love to every other human being we encounter in our Christian walk. But we must remain part of mainstream humanity in order to fulfill the righteousness of this commandment.

If we raise protective barriers to live sheltered lives as Christians and not do as God commanded, like the priest and the Levite in the parable, we transgress God's two greatest commandments and will incur His wrath (cp Lev 19:17-18; Mt 22:36-40; Lk 10:25-28; Ga 5:14; Jas 2:8-10 with Mt 7:21-27; Ro 2:13; Jas 1:22-25).

See also comments on Jn 13:34-35; Ro 13:8; 1Cor 12:31; Ga 5:1-8, 5:13; 1Th 3:12; 1Jn 3:7, 3:16-18; 3:19-22, 4:7-21; Rev 3:7-13

Luke:-