1 Samuel 15 (KJV)

22 And Samuel said, Hath the Lord as great delight in burnt offerings and sacrifices, as in obeying the voice of the Lord? Behold, to obey is better than sacrifice, and to hearken than the fat of rams.
23 For rebellion is as the sin of witchcraft, and stubbornness is as iniquity (wickedness) and idolatry. Because thou hast rejected the word of the Lord, he hath also rejected thee from being king.

Obeying God's word will always take precedence over any sacrifice.  This includes tithes. ~ Karmen

24 And Saul said unto Samuel, I have sinned: for I have transgressed the commandment of the Lord, and thy words: because I feared the people, and obeyed their voice.
25 Now therefore, I pray thee, pardon my sin, and turn again with me, that I may worship the Lord.

26 And Samuel said unto Saul, I will not return with thee: for thou hast rejected the word of the Lord, and the Lord hath rejected thee from being king over Israel.
27 And as Samuel turned about to go away, he laid hold upon the skirt of his mantle, and it rent.
28 And Samuel said unto him, The Lord hath rent the kingdom of Israel from thee this day, and hath given it to a neighbour of thine, that is better than thou.

35 And Samuel came no more to see Saul until the day of his death: nevertheless Samuel mourned for Saul: and the Lord repented (apologized to himself) that he had made Saul king over Israel.

2 Thessalonians 3 (KJV)

1 Finally, brethren, pray for us, that the word of the Lord may have free course, and be glorified, even as it is with you:

2 And that we may be delivered from unreasonable and wicked men: for all men have not faith.

3 But the Lord is faithful, who shall stablish you, and keep you from evil.

5 And the Lord direct your hearts into the love of God, and into the patient waiting for Christ.

6 Now we command you, brethren, in the name of our Lord Jesus Christ, that ye withdraw yourselves from every brother that walketh disorderly, and not after the tradition which he received of us.

7 For yourselves know how ye ought to follow us: for we behaved not ourselves disorderly among you;

8 Neither did we eat any man's bread for nought; but wrought with labour and travail (distress) night and day, that we might not be chargeable to any of you:

9 Not because we have not power, but to make ourselves an ensample (model) unto you to follow us.

10 For even when we were with you, this we commanded you, that if any would not work, neither should he eat.

11 For we hear that there are some which walk among you disorderly, working not at all, but are busybodies (snoopers).

12 Now them that are such we command and exhort (insist) by our Lord Jesus Christ, that with quietness they work, and eat their own bread.

14 And if any man obey not our word by this epistle (letter), note that man, and have no company with him, that he may be ashamed.

15 Yet count him not as an enemy, but admonish (scold) him as a brother.