because in the o.t., book of malachi, tithing is spoken of giving 10% of your "first fruits", known as livestock, grain, oil, wine, etc. because the n.t. doesn't teach "10%" tithing, some people still are stuck in the o.t. believing 10% is what you should tithe. but in the n.t., 1 of the Corinthian books teaches, "let every man be a cheerful giver", meaning out of his heart to give while not complaining about it. give with joy in other words. some Christians say, "well, you can't just do away with & disregard the o.t. & so they don't get out of the habit that o.t. laws are no longer binding in the n.t. which we live in now, as of the death of Jesus on the cross. then you have unfaithful churches teaching to tithe 10% because they think it makes the church secure in the present & in the future. those are controlling churches. they want your money. remember, a church is a business, they have bills to pay, people to pay, etc. & God knew that always. as far as divorce, God give only 2 reasons to remarry: spousal death & adultery. pastor adrian rogers, 1 of the top teacher-preachers since the late 1950's taught that he believes God will honor a new marriage for reasons other than God said.