Contradiction with Proverbs 16:9
This verse suggests that man's plans are directed by the Lord, while Acts 19:21 indicates Paul's decision to go to Jerusalem was set in his spirit.
Proverbs 16:9: A man's heart deviseth his way: but the LORD directeth his steps.
Contradiction with Jeremiah 10:23
It claims that man does not have the ability to direct his own steps, in contrast to Paul's deliberate planning in Acts 19:21.
Jeremiah 10:23: O LORD, I know that the way of man [is] not in himself: [it is] not in man that walketh to direct his steps.
Contradiction with James 4:13-15
Advises against presuming to know what one will do in the future, contradicting Paul's expressed intention in Acts 19:21.
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: