If You Have to Make a Choice (9:23)

If You Have to Make a Choice

9:23 O you who believe, do not ally yourselves even with your parents and your siblings, if they prefer disbelieving over believing. Those among you who ally themselves with them are transgressing.

This is the ultimatum

Choose Your Friends Carefully

3:28 The believers never ally themselves with the disbelievers, instead of the believers. Whoever does this is exiled from GOD. Exempted are those who are forced to do this to avoid persecution. GOD alerts you that you shall reverence Him alone. To GOD is the ultimate destiny.

What does it mean by transgressing? Is there a difference when we sin and hurt others or just our own souls?

How do you consolidate not allying yourself with your parents if they prefer disbelieving over believing with honoring your parents via the second commandment?