You're cherry picking the Bible though. There are plenty of verses about repentance and Yehoshua made a new Covenant with the world. Watch: Matthew 6:14-15:For if you forgive others for their transgressions, your heavenly Father will also forgive you. 15"But if you do not forgive others, then your Father will not forgive your transgressions. When Yehoshua died for us, some of what the Old Testament(like Leviticus) said is revised essentially.
Also later on in Matthew 6 there is a section on Worry. Matthew 6:25-34:Do Not Worry
25Therefore I say unto you, Take no thought for your life, what ye shall eat, or what ye shall drink; nor yet for your body, what ye shall put on. Is not the life more than meat, and the body than raiment? 26Behold the fowls of the air: for they sow not, neither do they reap, nor gather into barns; yet your heavenly Father feedeth them. Are ye not much better than they? 27Which of you by taking thought can add one cubit unto his stature? 28And why take ye thought for raiment? Consider the lilies of the field, how they grow; they toil not, neither do they spin: 29And yet I say unto you, That even Solomon in all his glory was not arrayed like one of these. 30Wherefore, if God so clothe the grass of the field, which to day is, and to morrow is cast into the oven, shall he not much more clothe you, O ye of little faith? 31Therefore take no thought, saying, What shall we eat? or, What shall we drink? or, Wherewithal shall we be clothed? 32(For after all these things do the Gentiles seek:) for your heavenly Father knoweth that ye have need of all these things. 33But seek ye first the kingdom of God, and his righteousness; and all these things shall be added unto you. 34Take therefore no thought for the morrow: for the morrow shall take thought for the things of itself. Sufficient unto the day is the evil thereof.
See what I mean? If you have God first, you're protected no matter how many times you slip, so long as it isn't murder/rape/molestation. Also, the "laws" in Leviticus are all to protect the Temple(body). That's why it lists the Kashrut dietary laws like not eating certain animals. They knew even then that certain foods/chemicals damage the body which is a temple to house the soul(spirit of God). The stuff about homosexuality was mainly for male homosexuality and they knew even then that that damages the body. Notice the Bible says very little about Lesbians but says a lot about homosexual men?