And here's the question of the day. What does it mean to believe on/have faith in Jesus? Is it believing he existed? All we have to do is believe he died for our sins? Or is there more to our faith in him than believing the things he did?
Welcome to CC. I also am a truth seeker, and here is the answer to your question I have learned from God's Word:
The normative way of stating the kerygma/God's requirement for salvation in the NT is “Accept Christ Jesus as Lord”
(as in 2CR 4:5 & CL 2:6). The main points of Christian orthodoxy implicit in this statement can be explained or elaborated as follows:
- There is a/one all-loving and just Lord or God (DT 6:4, JN 3:16, 2THS 1:6), who is both able (2TM 1:12) and willing (1TM 2:3-4) to provide all morally accountable human beings salvation or heaven—a wonderful life full of love, joy and peace forever.
- Human beings are selfish or sinful (RM 3:23, 2TM 3:2-4, CL 3:5), miserable (GL 5:19-21), and hopeless (EPH 2:12) or hell-bound at the judgment (MT 23:33 & 25:46) when they reject God’s salvation (JN 3:18, RM 2:5-11).
- Jesus is God’s Messiah/Christ and incarnate Son, the way that God has chosen (JN 3:16, ACTS 16:30-31, PHP 2:9-11) of providing salvation by means of his atoning death on the cross for the payment of the penalty for the sins of humanity (RM 3:22-25 & 5:9-11), followed by his resurrection to reign in heaven (1CR 15:14-28).
- Thus, every person who hears the NT Gospel needs to repent and accept God’s justification in Jesus as Christ/Messiah the Lord or Supreme Commander (LK 2:11, JN 14:6, ACTS 16:31), which means trying to obey His commandment to love one another (MT 22:37-40, JN 13:35, RM 13:9)—forever (MT 10:22, PS 113:2).
- Then God’s Holy Spirit will establish a saving relationship with those who freely accept Him (RV 3:20) that will eventually achieve heaven when by means of persevering in learning Truth/God’s Word/sanctification everyone cooperates fully with His will (JN 14:6, 17&26, RM 8:6-17, GL 6:7-9, EPH 1:13-14, HB 10:36, 12:1, JM 1:2-4).
Although perfection is not achieved in this life,
the necessity of learning the didache in order to strive for perfection indicates the need for perseverance or to keep on learning and growing spiritually until we die physically (PHP 3:12-14). Thus, although learning any specific part of the
didache is not GRFS, a person who does not “hunger and thirst for righteousness” (MT 5:6) or want to learn “every word that comes from the mouth of God” (MT 4:4) fails the self-examination Paul commanded and Jesus implied (mentioned previously).
If we truly believe in Jesus as Christ, the One who represents God the Father, then we will also accept Him as Lord (LK 2:11) or God the Son (MT 16:16) or God in the human dimension (CL 2:9). When we truly accept Jesus as Lord, we will want to please Him by doing His will (MT 7:21, EPH 5:8-10). Learning the manifold teachings or doctrines describing God’s moral will takes a lifetime. Thus, the need for perseverance/loyalty/remaining faithful, which is as easy or simple as an act of will. Remain faithful until the end.
Paul taught the importance of continuing to learn God’s Word (LGW) in 2TM 3:14-17, saying “Continue in what you have learned and have been convinced of, because you know those from whom you learned it, and how from infancy you have known the Holy Scriptures, which are able to make you wise for salvation through faith in Christ Jesus. All Scripture is God-breathed and is useful for teaching, rebuking, correcting and training in righteousness, so that the servant of God may be thoroughly equipped for every good work.”