Availability is superior to ability
God doesn’t call the able but the available.
You don’t know what God can do until you make yourself available to Him.
God works through the available and not through the able.
It is availability that generates ability.
Moses was not able to speak but was available for God to work.
By His availability, He was enabled to bring out 3 million people out of the house of bondage despite His inability to speak.
Availability simply means willingness and readiness.