The one who calls you is faithful and he will do it.
[1 Thessalonians 5:24]
It is important to remember, that a need never constitutes a call. It can well lead to a call but does not constitute a call. There are hundreds of needs around us daily and so it is very important to know what God wants you involved in. When you know God has called you to do something, then you can know He will be faithful in guiding and providing for you. And when the going gets tough, you can rely on the Lord's strength and enabling because He was the One who call you.
...so that no one would be unsettled by these trials. You know quite well that we were destined for them.
[1 Thessalonians 3:3]
...who through faith are shielded by God's power until the coming of the salvation that is ready to be revealed in the last time.
[ 1 Peter 1:5]
Make sure, whatever you get involved in, has the call of God upon it. Then you can totally trust and know that Lord's faithful and enabling hand upon your life and ministry.
May God himself, the God of peace, sanctify you through and through. May your whole spirit, soul and body be kept blameless at the coming of our Lord Jesus Christ.
[1 Thessalonians 5:23]