when.

Luke 21:18, 19
Yet not even a hair of your head will perish. . . .

Psalm 27:1-3
The LORD is my light and my salvation--whom shall I fear? The LORD is the stronghold of my life--whom shall I dread? . . .

Psalm 46:1, 2
God is our refuge and strength, an ever-present help in times of trouble. . . .

Psalm 112:7
He will not fear bad news; his heart is steadfast, trusting in the LORD.

Proverbs 3:25, 26
Do not fear sudden danger or the ruin that overtakes the wicked, . . .

Isaiah 8:12
"Do not call conspiracy everything these people regard as conspiracy. Do not fear what they fear; do not live in dread.

Isaiah 51:12, 13
I, even I, am He who comforts you. Who are you that you fear mortal man, or a son of man who withers like grass? . . .

Jeremiah 4:19, 20
My anguish, my anguish! I writhe in pain! Oh, the pain in my chest! My heart pounds within me; I cannot be silent. For I have heard the sound of the trumpet, the alarm of battle. . . .

Matthew 24:6-8
You will hear of wars and rumors of wars, but see to it that you are not alarmed. These things must happen, but the end is still to come. . . .

Mark 13:7, 8
When you hear of wars and rumors of wars, do not be alarmed. These things must happen, but the end is still to come. . . .

but.

Luke 21:8, 28
Jesus answered, "See to it that you are not deceived. For many will come in My name, claiming, 'I am He, ' and, 'The time is near.' Do not follow them. . . .