Joshua 1:9 has been playing in my head as well. It was the first verse in the Beth Moore memory verse year long challenge from 2013 for me (I made it to about month 6... Fail! Ha) the verse reads, "Have I not commanded you, be strong and courageous, do not be discouraged, do not be afraid, for The Lord God is with you, wherever you go!"
The verse God have me for last week when God called me to a task that scared the mess out of me was "when I called to you, you answered me, you greatly emboldened me, made me bold with strength!" Ps 138:3
And the song we sang last Sunday in church was Hillsong's oceans, "Spirit lead me where my trust is without borders. Let me walk upon the waters wherever you would call me. Take me deeper than my feet could ever wander and my faith will be made stronger in the presence of my Savior."
Bold words, bold verses, I have no idea what God is "up to" but I pray I will be ready or "alert" and obedient to whatever He calls me no matter how humanly impossible it may seem.