The Difference Between the Old Testament and the New Testament Saints
Many people have wondered why the Old Testament Hebrews were often struck down with plagues and judgments of God while wondering through the wilderness near Mount Sinai.
The Old Testament people who rebelled against the Old Testament laws were destroyed in the wilderness of Sinai. They were destroyed because they were in the presence of God and were hardening themselves against God's teachings, which He gave to Moses. Their actions and words proved that their hearts were hardened against God and His ways.
The New Testament Completes the Old
The sacrificial laws, and the feast day laws, and the dietary laws, and other ceremonial laws were all fulfilled in Jesus Christ (Romans 10:4, Galatians 3:1-8). We Christians have no need to fulfill them since Christ did that for us, nailing all the ordinances, which were written against us, on the cross (Colossians 2:6-17).
But, God does expect us to obey Him in the Ten Commandments, which are repeated throughout the New Testament, including in the epistles from Romans to Revelation (as we follow the leading of the Holy Spirit). When we disobey Him, all we have to do is confess it to Abba Father God and repent. Asking Abba God to fulfill that unmet need is the next good thing to do.
We have the promise of God Jesus spoke of in Matthew 7:11. Jesus said: "[11] If ye then, being evil, know how to give good gifts unto your children, how much more shall your Father which is in heaven give good things to them that ask him?"
The danger is not believing God's Holy Word.