3 Let not him who eats despise him who does not eat, and let not him who does not eat judge him who eats; for God has received him.
4 Who are you to judge another’s servant? To his own master he stands or falls. Indeed, he will be made to stand, for God is able to make him stand.
The strong shouldn’t despise the weak for not eating, the weak shouldn’t judge the strong for eating.
Don’t criticize about matters not covered in Scripture.
God hath received him — at salvation, by faith in Christ
Verse 4 is speaking to the weak.
Stand or fall — remain upright or sin in using liberty
The believer stands in Christ’s power, not his own.
Liberty (without law) without the power of Christ will result in falling.
Galatians 5:13 — You, my brothers, were called to be free. But do not use your freedom to indulge the sinful nature; rather, serve one another in love.