1 Corinthians 8:8; 1 Corinthians 14:12; 1 Corinthians 15:58

1 Corinthians 8:8

8 But meat commendeth us not to God: for neither, if we eat, are we the better; neither, if we eat not, are we the worse.

1 Corinthians 14:12

12 Even so ye, forasmuch as ye are zealous of spiritual gifts, seek that ye may excel to the edifying of the church.

1 Corinthians 15:58

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.