Whirlling Noise
 

Im getting a whirlling noise when i accelerate , sounds like the front. it has been getting worse and more noticeable , it doesnt make the noise if the jeep is sitting still running , but if i give it gas , just a tap on the pedal i can hear it. I use to hear it more on decelerate , but now its louder when i give it gas.
Any suggestions on what to check for , i checked the front wheels and no play in them. Rear has brand new seals and bearings.