Gradle issue in Mac

I have copied the Gradle zip into Mac OS; Set the class path; tried grade -v; it worked; After sometime (few mins later) in new session, it did not work; Command not found;

I have tried from bin folder, but same issue.

“…in a new session.” What is the path in this new session? If you call ‘echo $PATH’ do you see $GRADLE_HOME/bin?

From my .bash_profile

export GRADLE_HOME=/opt/gradle
export GRADLE_OPTS="-Dorg.gradle.daemon=true -Dorg.gradle.jvmargs='-Xms1024m -Xmx4096m'"

I think the Mac reads .bash_profile with each new Terminal (unlike Linux, where logout/login in is required).