Contradiction with Proverbs 14:23
Proverbs suggests that hard work always leads to profit, while Ecclesiastes questions what profit is gained from labor.
Proverbs 14:23: In all labour there is profit: but the talk of the lips [tendeth] only to penury.
Contradiction with Colossians 3:23-24
Colossians encourages working heartily as for the Lord and promises reward, implying profit from labor, contrasting with the doubt in Ecclesiastes.
Colossians 3:23-24: And whatsoever ye do, do [it] heartily, as to the Lord, and not unto men;
Contradiction with Psalms 128:2
Psalms states that eating the labor of your hands is a blessing, implying profit, whereas Ecclesiastes expresses uncertainty about the gain from labor.
Psalms 128:2: For thou shalt eat the labour of thine hands: happy [shalt] thou [be], and [it shall be] well with thee.
Contradiction with 1 Corinthians 15:58
Paul exhorts that labor in the Lord is not in vain, suggesting meaningful profit, contrary to the existential questioning in Ecclesiastes.
1 Corinthians 15:58: Therefore, my beloved brethren, be ye stedfast, unmoveable, always abounding in the work of the Lord, forasmuch as ye know that your labour is not in vain in the Lord.
Contradiction with Galatians 6:9
This verse encourages perseverance in well-doing with the assurance of reaping rewards, contrary to Ecclesiastes’ skepticism about the benefits of toil.
Galatians 6:9: And let us not be weary in well doing: for in due season we shall reap, if we faint not.