https://www.blender.org/download/
For next time use google before asking where to download any program.
Try this https://download.blender.org/release/Blender2.70/blender-2.70a-OSX_10.6-i386.zip
or this https://download.blender.org/release/Blender2.63/blender-2.63a-release-OSX_10.5_ppc.zip
or https://download.blender.org/release/Blender2.78/blender-2.78c-OSX_10.6-x86_64.zip
What version of macOS do you have?