Confidence is a term often equated to pride and arrogance. Can a Christian be confident and still be a good witness for Christ? Yes they can! But Christians who love and follow Christ do not put their confidence in themselves. They put all of it in Jesus. This isn’t to say that you cannot be confident in your day to day life. You know the things that you excel at and you should feel confident that you will keep excelling at them. You can do great things and still show humility in your lifestyle. Let’s take a look at what the Bible says about confidence.
Confidence In Others/Not God
“Stop regarding man in whose nostrils is breath, for of what account is he?” (Isaiah 2:22) This verse, originally spoken by Isaiah to Judah and Jerusalem, cuts right to the heart of the matter. We all must assess daily just how weak our own power and pride  is. If you put your confidence in your spouse, they will let you down over and over again (forgetting anniversaries, being late, procrastination). If you put your confidence in your boss, they will let you down many times too (forced overtime, 7 day work weeks, deny your vacation requests). There is not one single person that will not let you down. We all fail each other at some point.
Confidence In Yourself (Philippians 3:3)
“There is no worse screen to block out the Spirit than confidence in our own intelligence.” (John Calvin) You cannot hear the Holy Spirit if you only rely on your own wisdom. By leaning on your own understanding you will block out what God is trying to tell you and teach you. “Whoever trusts in his own mind is a fool, but he who walks in wisdom will be delivered.” (Proverbs 28:26) And true wisdom has its foundation in the fear of the Lord. (Proverbs 1:7) As I stated above, you can have confidence in yourself when you know you are skilled at something. After all God gave us all certain skills and He wants us to use them for His glory. So be confident in your trade, but channel that confidence back to God and thank Him for allowing you to use your skills for His glory.
Confidence In God (Proverbs 14:26)
“I can do all things through Him who strengthens me.” (Philippians 4:13) When you are truly listening to God  and putting all of your confidence in Him you will make it through every trial and test stronger then when you went in. God already knows what you are going through and He wants you to seek Him and rest on His promises. You can have confidence in these verses about God:
“It is the Lord who goes before you. He will be with you; He will not leave you or forsake you. Do not fear or be dismayed.” – Deuteronomy 31:8
“Humble yourselves, therefore, under the mighty hand of God so that at the proper time He may exalt you, casting all your anxieties on Him, because He cares for you.” – 1 Peter 5:6-7
“So we can confidently say, ‘The Lord is my helper; I will not fear; what can man do to me?’” – Hebrews 13:6
“Cast your burden on the Lord, and He will sustain you; He will never permit the righteous to be moved.” – Psalm 55:22
“Fear not, for I am with you; be not dismayed, for I am your God. I will strengthen you, I will help you, I will uphold you with My righteous hand.” (Isaiah 41:10)
These verses are just a glimpse into why you can have full confidence in God. These verses alone showcase that He will not leave or forsake us, He is with us, He exalts us, He cares for us, He helps us, He sustains us, He strengthens us, and He upholds us. Our God is in love with all of His children and He will continue to allow us to go through trials (sometimes extremely tough and anguishing ones) but He is right there with us through it all. He has ordained every single moment of our lives and we can trust that He is doing something when life is happening. We may not see the end result until we are in glory, but God knows what He is doing.
Place all of your confidence in God and He will guide all of your steps one foot at a time. Stay strong in the Lord and be confident in all of His promises. “Blessed is the man who remains steadfast under trial, for when he has stood the test he will receive the crown of life, which God has promised to those who love him.” (James 1:12) May God continue to bless you as you live a life worthy of the calling!
More about confidence: Bible Verses About Confidence 
Resource – Scripture quotations are from The Holy Bible, English Standard Version® (ESV®), copyright © 2001 by Crossway, a publishing ministry of Good News Publishers. Used by permission. All rights reserved.