The student of the bible must rightly divide the word of truth. There are divisions to be made throughout scripture. It is not good bible study to try and mesh all scripture to the same audience.
Re "The student of the bible must rightly divide the word of truth.":
Correct, and dividing means understanding, which involves applying a hermeneutic or parameters for
interpreting the Bible. A good way to begin is with the instruction of Paul (1THS 5:21) to “Test everything. Hold on to the good.” A truthseeker
is guided by the question: What is most true or closest to the truth, especially the Truth of God’s Word? The method for discerning truth is reasoning or logic that is made as objective as possible by learning from other truthseekers, preferably via dialogue when possible, but otherwise by reading what they wrote.
As a result of seeking ultimate truth, a person might come to value
two NT teachings as key points from which to triangulate or use to guide an interpretation of the Bible, especially problematic statements. First, God loves and wants to save everyone (1TM 2:3-4); Christ died to show God’s love and the possible salvation of all (RM 5:6-8) including His enemies (ungodly, atheist, anti-Christ). Second, God is just (2THS 1:6a, cf. RM 3:25-26 & 9:14, DT 32:4, PS 36:6, LK 11:42, RV 15:3). Explanations of God’s Word should not impugn God’s justice and love for all people (JL 2:13, JN 3:16). This parameter is affirmed in the OT (PS 145:17): “The Lord is righteous in all his ways, and holy in all his works.”
This principle leads one to conclude that (third)
even the wrath of God is an expression of His love and justice. The writer of Hebrews (12:4-11) indicates that divine wrath is intended as discipline or for the purpose of teaching people to repent of their hatefulness and faithlessness (PR 3:12, IS 33:14-15 RV 3:19). If a righteous explanation cannot be found for a passage of Scripture purporting to describe God’s will (such as JSH 6:17-24, 8:2&24 & 10:28-40, 11:6-23), then it should be considered as historical or descriptive of what people perceived rather than as pedagogical or prescriptive of God’s nature. Unrighteous rage should not be attributed to God.
Other important elements in this hermeneutic include the following: (Fourth)
Everyone lives by fallible faith/belief/opinion and sufficient knowledge of evidence rather than by absolute certainty or proof or coercion (2CR 5:7). Fifth,
a logical train of thought leads an unbiased truthseeker to have a propensity to believe in an all-loving God, who is not tricky and does not hide the way to heaven (HB 11:6, ACTS 13:10). Sixth, humanity’s understanding of God evolved or progressed through the millenniums, so that (6.)
the OT was superseded by the NT, which is the apex of divine revelation (HB 7:18, 8:13, 9:15).
The method employed in this hermeneutic is additive as taught by Paul (in 1THS 5:21), exemplified by Jesus (in MT 4:6-7) and illustrated by the transparent overlays of bodily systems found in some books on anatomy. An interpreter should want to include all true assertions in the picture of reality without making a “Procrustean Body” by cutting off or ignoring parts that do not seem to fit, because (7.)
the correct understanding must be self-consistent or else God would be tricky. The whole truth combines parts without sawing!
The Bible says God’s Spirit is love and truth (1JN 4:8 & 5:6), which means all love (agape, RM 6:5-8) in all people is God’s operation, and all truth in all cultures is God’s revelation. Thus, (8a.)
becoming a Christian theist does not mean rejecting what is good and true in one’s pre-Christian experience or culture (in which God was revealed by creation, conscience and moral laws). As the philosopher Hegel taught: when considering two different understandings (thesis A versus antithesis B), (8b.)
the truth may not be either one or the other but rather the proper harmonization of the two. (Both A and B = synthesis C.)
The Bible teaches (GN 1:3, JN 1:1-3) that (9.)
both the world and inspired words are expressions of God’s Word/Logos, and thus scientific and spiritual truths must be compatible or else God would be tricky. So, while belief that God is love and Jesus is Lord is based upon the biblical revelation, knowledge also is gleaned from the natural sciences and common sense (God-given reasoning ability, e.g., Paul's preaching to the Athenians in Acts 17), especially where the Bible seems silent, hoping to be guided by the Spirit of Truth (JN 14:17).