At the beginning of Romans 14, Paul warns the Romans not to judge one another over diet and days, and reserves the harsher term for the stronger judging the weaker:
Τὸν δὲ ἀσθενοῦντα τῇ πίστει προσλαμβάνεσθε, μὴ εἰς διακρίσεις διαλογισμῶν. 2 ὃς μὲν πιστεύει φαγεῖν πάντα, ὁ δὲ ἀσθενῶν λάχανα ἐσθίει. 3 ὁ ἐσθίων τὸν μὴ ἐσθίοντα μὴ ἐξουθενείτω, ὁ δὲ μὴ ἐσθίων τὸν ἐσθίοντα μὴ κρινέτω, ὁ θεὸς γὰρ αὐτὸν προσελάβετο.
As for the one who is weak in faith, welcome him, but not to quarrel over opinions. One person believes he may eat anything, while the weak person eats only vegetables. Let not the one who eats despise the one who abstains, and let not the one who abstains pass judgment on the one who eats, for God has welcomed him.
Why? One reason, at least, is that such “despising” would have been evidence that the despiser had forgotten who and what he was apart from and without Christ. In 1 Corinthians 1, Paul reminds the Corinthians to consider their calling: most of them had been foolish, weak, and ignoble by the standards of the world, and it was just such weak and foolish things–things that are despised–that God had chosen as the vessels of his election, in order that no man may boast before God.
ἀλλὰ τὰ μωρὰ τοῦ κόσμου ἐξελέξατο ὁ θεός, ἵνα καταισχύνῃ τοὺς σοφούς, καὶ τὰ ἀσθενῆ τοῦ κόσμου ἐξελέξατο ὁ θεός, ἵνα καταισχύνῃ τὰ ἰσχυρά, 28 καὶ τὰ ἀγενῆ τοῦ κόσμου καὶ τὰ ἐξουθενημένα ἐξελέξατο ὁ θεός, τὰ μὴ ὄντα, ἵνα τὰ ὄντα καταργήσῃ, 29 ὅπως μὴ καυχήσηται πᾶσα σὰρξ ἐνώπιον τοῦ θεοῦ.
But God chose what is foolish in the world to shame the wise; God chose what is weak in the world to shame the strong; God chose what is low and despised in the world, even things that are not, to bring to nothing things that are, so that no human being might boast in the presence of God.
If the despiser had been such and yet had been the object of God’s mercy and the recipient of the manifestation of his grace, how could he, who had no ground for boasting other than Christ and him crucified, then presume to look down on another? That “other” is responsible to his master, before whom he stands or falls; and God will make him stand. In other words, the ground is level, as one of my pastors used to say, at the foot of the Cross.
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