Contradiction with James 4:13-15
This verse emphasizes on saying "If the Lord will" rather than presuming to know God's plans, whereas 2 Samuel 7:27 reflects a certainty and boldness about God's promise being established.
James 4:13-15: Go to now, ye that say, To day or to morrow we will go into such a city, and continue there a year, and buy and sell, and get gain:
Contradiction with Proverbs 19:21
This verse states that many are the plans in a person's heart, but the Lord's purpose prevails, suggesting human uncertainty, contradicting the assurance found in 2 Samuel 7:27 about God's revealed promise to David.
Proverbs 19:21: [There are] many devices in a man's heart; nevertheless the counsel of the LORD, that shall stand.
Contradiction with Matthew 6:34
This verse advises not to worry about tomorrow, implying a level of uncertainty about plans, contrasting the confidence in 2 Samuel 7:27 regarding God's promise being fulfilled.
Matthew 6:34: Take 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.