Philippians 1 28
And in no way be alarmed or intimidated [in anything] by your opponents, for such [constancy and fearlessness on your part] is a [clear] sign [a proof and a seal] for them of [their impending] destruction, but [a clear sign] for you of deliverance and salvation, and that too, from God.
Compare with other 3 random translations
NAS Philippians 1:28and in no way alarmed by your opponents—which is a sign of destruction for them, but of salvation for you, and this too, from God.
EAS Philippians 1:28I want to know that you are not afraid of the people who speak against you. If you are brave, that will be a sign from God. It will show your enemies that they will lose and you will win. God will punish them, but he will save you.
NIV Philippians 1:28without being frightened in any way by those who oppose you. This is a sign to them that they will be destroyed, but that you will be saved—and that by God.