Romans 14:17 provides the reason: the kingdom is about righteousness and peace, so abstaining aligns with kingdom priorities.

Romans 14:13 introduces the command not to put a stumbling block, which verse 21 then applies to food and drink.

Romans 14:20 explicitly says 'it is wrong to make another stumble' — directly restating the same warning, making it a strong parallel.

Romans 14:3 urges mutual acceptance without judgment — complements the call not to cause stumbling, both part of the same argument about disputable matters.

Romans 15:2 adds the goal of building up the neighbor, showing the constructive side of avoiding stumbling.

Romans 15:1 calls the strong to bear with the weak, giving the positive duty that motivates not causing stumbling.

Revelation 2:14 condemns Balaam's teaching that put a stumbling block before Israel—the exact issue of food sacrificed to idols Paul addresses.

Hebrews 12:13 urges making straight paths so the lame are not put out of joint—supporting the same principle of removing obstacles for the weak.

1 Corinthians 8:13 shows Paul's personal commitment: he would give up meat forever to avoid making a brother stumble — a parallel application.

Luke 17:2 uses the same 'millstone' warning about causing little ones to stumble—directly reinforcing Paul's principle of avoiding brother's stumbling.

Matthew 18:7-10 warns against causing 'little ones' to sin — a strong parallel to Paul's concern for the weak brother's conscience.

Acts 15:29 lists specific abstentions for unity — directly parallels the principle of avoiding what causes a brother to stumble over food.

Matthew 18:6 gives a severe warning against causing believers to stumble — directly reinforcing the same principle with a millstone metaphor.

Matthew 17:27 shows Jesus avoiding offense by paying the temple tax — a parallel principle of not causing others to stumble over non-essentials.

1 Corinthians 8:9 warns that freedom can become a stumbling block to the weak — an exact parallel to Paul's argument here about not causing offense.

1 Corinthians 8:11 says a weak brother is destroyed by your knowledge — the same concern for the brother's spiritual well-being as in Romans 14:21.

Psalm 73:15 shows the psalmist refraining from speaking doubt to avoid betraying God's children—parallel to avoiding causing a brother to stumble.

Leviticus 11:8 lists unclean animals—the OT dietary laws that weaker believers still observed, causing the tension Paul resolves here.

Luke 17:1 gives a general warning against being the source of temptation — the principle behind Paul's specific application to food.

Jeremiah 18:15 describes Israel causing others to stumble through idolatry—a broader example of the principle of not being a stumbling block.