Can Christians Get Angry at Sin and Death?

Can Christians get angry at sin and death? My father died unexpectedly earlier this month. Because he had Alzheimer's I had years to think about him passing away and how I would feel. I expected grief and sorrow, but I didn't expect to feel angry.
We should evaluate our feelings to determine whether they please or displease God. We do this by reading God's Word to see what it says about the feelings we are experiencing. We also look at our premier example, Jesus Christ Himself, to see if He experienced those same feelings because He was the perfect Person.
The difficulty with evaluating anger is it isn't as straightforward as other feelings. There are some verses that discourage anger and others that encourage it.
Lesson 1: we should evaluate ______ ________________
Lesson 2: we can be angry at:
(part one) ______
(part two) __________
Family Worship Guide
Memory verse: Psalm 34:22
Directions: Read the verses and then answer the questions:
Day 1: 1 Thess 4:13, Eph 2:12, Matt 5:4, 26:36-38, Proverbs 22:24,Ecc 7:9, Col 3:8. Would you agree that death is "Normal"? Why doesn't it feel normal? Why do you think we should evaluate our feelings? What feelings have you experienced when you've lost a loved one? Do you believe those feelings are supported by God's Word?
Day 2: Deut 9:8, Num 11:1, Mk 3:5, James 1:20, 4:1-2, Ps 97:10, Prov 8:13, Amos 5:15, Rom 12:9.Why is anger a difficult feeling to evaluate? Can you think about godly examples of anger in Scripture? What about ungodly examples? What does it look like to have a godly anger toward sin? What does ungodly anger look like, and why is it often produced in our lives?